diff --git a/src/compat.js b/src/compat.js
index 0d04f4d..48a0cb9 100644
--- a/src/compat.js
+++ b/src/compat.js
@@ -19,7 +19,7 @@ this program. If not, see <http s ://www.gnu.org/licenses/>.
 const { extensionUtils } = imports.misc;
 const Me = extensionUtils.getCurrentExtension();
 
-const shellMinorVersion = parseInt(imports.misc.config.PACKAGE_VERSION.split('.')[1]);
+const shellMinorVersion = parseInt(imports.misc.config.PACKAGE_VERSION.split('.')[1]) || parseInt(imports.misc.config.PACKAGE_VERSION.split('.')[0]);
 
 
 /**